The same 36 questions were answered using four QALD tools:
WDAquahttp://qanswer-frontend.univ-st-etienne.fr [1]},
QAKiShttp://qakis.org [2]},
gAnswerhttp://ganswer.gstore-pku.com [3]}
and Platypushttps://askplatyp.us [4]}.
